摘要
锂离子电池在电动汽车行业中的应用引起了广泛的关注。然而,由于锂离子电池在运行过程中会逐渐老化,这可能导致意外发生,因此需要对锂离子电池进行监管和维护。荷电状态(state of charge,SOC)对锂离子电池的监测和维护起着至关重要的作用。准确的SOC估计可以确保锂离子电池正常充放电并延长其使用寿命。对锂离子电池SOC估计方法进行了总结和分类,介绍了各种方法的原理,总结了其优缺点,并对未来锂离子电池SOC估计方法做出展望。
The application of lithium ion batteries in the electric vehicle industry has attracted extensive attention.However,due to the gradual aging of lithium ion batteries during operation,which may lead to accidents,it is necessary to supervise and maintain the lithium ion batteries.State of charge(SOC)plays an important role in the monitoring and maintenance of lithium ion batteries.Accurate SOC estimation can ensure normal charging and discharging of lithium ion batteries and prolong their service life.The current state of charge estimation methods for lithium ion batteries were summarized and classified.There were two kinds of estimation methods-direct method and indirect method.The direct method included coulomb counting method,open circuit voltage method and internal resistance method.The indirect method included model-based,data-driven and fusion methods,illustrating the principles of each method and summarizing its advantages and disadvantages.Finally,a summary was made and the future SOC estimation methods of lithium ion batteries are prospected.
作者
万广伟
张强
WAN Guangwei;ZHANG Qiang(School of Energy and Power Engineering,Shandong University,Jinan Shandong 250061,China)
出处
《电源技术》
CAS
北大核心
2023年第9期1122-1125,共4页
Chinese Journal of Power Sources
关键词
锂离子电池
荷电状态
直接法
间接法
lithium ion battery
state of charge
direct method
indirect method
